Power weaving loom



Sept. 13, 1927. F. EILHAUER POWER WEAVING LOOM Filed Dec. 1, 1925 2 Sheets-Sheet l Sept. 13, 1921- 1,642,335

F. EILHAUER POWER WEAVING Loom Filed Dec. 1, 1925 '2 Sheets-Sheet 2 Patente'd Sept. 13, .1927.

HD3103 EILHAUEB, OF NEUSTADT, GERMANY,

' rowan wnavnic LOOM.

Application fled December 1, 1928, Serial 1T0.

The invention relates to power looms, and

its particular object is a new method of and means for boxing and picking the shut tles, whereby the violence of the impact of 5 the shuttle is checked and a smooth running of the loom attained, together with other advantages.

According to the invention, the box which receives the shuttle at the end of its stroke is also used as a meansfor driving the shuttie, that is to say as picker, under the action of a picker stick, and for this purpose it is mounted to be adjustable horizontally on the lay in such a manner as to take up the oncoming shuttle gradually, and after being struck by the picker-stick, discharge the shuttle afresh.

According to the invention, moreover, the

shuttle and the picker stick and picker are provided means for coupling them together at the time of impact, and for un-f coupling them when the shuttle is'being disicharged in the picking stroke. The member guided on the lay in longitudinal direction ,5 is further connected with a device for pullso instance the picker is connected by an intermediate member ofadjustable length,

with the result that the travel of theshuttle can be adapted to the width of the fabric. An embodiment of the invention is illustrated byway of example, in the accompanying drawings in which the picker serving at the same time as shuttle box isprovi e d with means for coupling it with the shuttle and for pulling the shuttle and the weft after theimpact ofthe shuttle on the picker, I J Fig. 1 is a front elevation, some parts being broken away, showing the lay of a loom with the drivin mechanism for the picker. Fig. 2 shows 1n plan view one end of the shuttle path with t e shuttle, and the picker.

Fig. 3 shows in side elevation art of the loom with the lay and the. mec anism for operating the lay andthepicker, partly in "section.

emcee, and in Germany December 1, 1m.

Figs. and 5 show another embodiment of a device for operatin the picker, partly broken away, and in ent elevation and side elevation respectively. V

In these figures 1 represents the shuttle race of the lay, which is mounted on the la sword 3 secured on the rocking shaft 2. member 4, serving as picker and also as shuttle. box, is adapted to slide longitudinally on the raceand is articulated by means of an intermediate member 5, the length of which is adjustable, to a picker stick 7 sub jected to the tension of aspring 6. The picker stick 7 is connected. to the lay in known manner so that 'it' can rock in the plane of the rockin'gshaft 2 and lays'words 3. The picker stick 7 is articulated to a crank 9, by means of a connecting rod 8,

said crankbeing mounted on a shaft 10 sup-'- ported on the lay. The shaft10 also-carries a ratchet wheel 11, with a notch 12, on which slides a spring pawl 14 articulated on a chain roller 13 mounted idly on the shaft 10. The chain roller-.13 is connected, on the one hand, with .a continuously driven crank 16 by means of an attached chain 15, with an intermediate'member, and on the other hand with an opposing return spring 17.

By means of the chain or rope drive 15, the

ratchet and pawl mechanism 12 11 the crank 9, connecting rod 8, picker stick7 and link 5, the crank 16 eflect's the return stroke of the shuttle box and icker mechanism 4, until the deadpoint o the crank 16 and crank 9 is passed, the crank. 9 being held fast, against the action of the spring 6, by a locking member 18 pivotally mounted on the lay whilst the chain roller 13 is rotated in the reverse direction .by the return 17. The lockingmember 18 is dis la durin the return stroke of the lay, y a chain '1 so that the picker stick 7 swings, under the action of the spring 6 and propels the-picker 4 forward.

When the layoscillates are d shaftx2- to the left (Fig. 3) a chain 19 securely holds the locking hook 1850 that its top end is'pulled off from under the crank arm 9.

A two-armed pawl 21 influenced by a spring 20,is pivoted on the picker 4 at the point 22, and at the moment of impact of the shuttle 24 against the icker 4, the nose 230i said pawl, under t e action of the spring 20, engages in a notch 25 on the shuttle. At the point at which the forwardmovement of the picker ends, the race 1 is provided with a stop 26, against which the rear arm 27 of the coupling pawl 21 strikes during the advance of the picker, whereby the nose 23 is lifted out of the notch 25 of the shuttle. In the example shown, the stop 26 is formed as a pivotal pawl which remains stationary in its position at the moment of the picking stroke, and gives way during the return stroke of the picker. The recess in the rear arm 27 of the pawl is for the purpose of enabling the return of pawl 21 mto the receiving position after the picking of the uncoupled shuttle. The abutment 26 is however prevented'by a stop pin from oscillating in opposite direction. The stop 26 is adapted to oscillate in outward direction so that the coupling pawl can be pulled back.

. The front end of the picker 4 is provided with a projection 28, the sloping contact surface of which is adapted to the shape of the shuttle nose, said surface takin up the pressure of the coupling pawl 21 whlch tends to tilt the shuttle.

At the moment of impact of the shuttle 24 against the picker 4, the latter has preferably commenced its return stroke already and has moved a certain distance from the stop 26.

The nose of the shuttle runs up the sloping surface of the projection 28 on the plcker,

and the pawl 23 drops into the notch 25 in the shuttle 24, which is hereby coupled to the picker 4. The movement of-the shuttle merges into the picker movement set u by the picker-stick 7. After the impact 0 the shuttle, the weft thread is tightened by the return stroke of the picker, until the crank 9, after passing the dead point, is caused to I bear against the stop 18 by the pull of they spring. Drawing back the stop 18 releases the spring 6, whereby the picker stick-7 is thrown forward along with the picker 4. On the pawl arm. 27 coming in contact with the fixedstop 26, the nose 23 is lifted outof the notch in-the shuttle 24, and when the picker 4' goes to rest, the released shuttle continues its stroke alone.

The described mechanism for operating the picker stick 7 and picker 4 may be replaced by the usual form of striker-motion (Figs. 5 and 6) consisting of an underpick picker stick 43, swung by an eccentric or,

roller'arm 44 and acting on a short arm 41 a of the picker stick 42. In this case the return stroke of the picker stick 42-with which 1 is connected the picker 4, is effected by means of a t-appet 46, mountd on the eccentric shaft 45 and controlling a roller arm 47 connected to the under pick pickerstick 43.

For different widths of fabric, the shuttle arms 5, thus adapting the stroke of theshuttle to the width of the fabric.

1. In a loom of the fly motion type the combination of a shuttle propelled across the 100m free from engagement with any propelling means, mechanisms on the picker for catching the shuttle, of mechanisms on the picker and shuttle for coupling'the shuttle with saidpicker at the impact of the shuttle against said picker, and of mechanisms on the lay for uncoupling said shuttle from said picker at the throwing of said shuttle.

2. In a loom of the fly m'otion type II claimed in claim 1 the combination of mechanisms for withdrawing-the picker after itclaimed in claim 1, the arrangement on the picker of a projection turned ,towards the shuttle and having a ide surface in conformity with the pointed shape of the shuttle. I

5. In a loom of the fly motion e as claimed in claim 1, the combinationo mechanisms for the pulling back of the picker after its coupling with the shuttle, these mechanisms consisting of a .picker stick hingedly connected with the picker, means for slowly pullingback the picker, and means for rapidly throwing the picker forward,

6. Ina loom of the fly motion as claimed in claim 1, the combination 0 mechanisms'for the pulling back'of the picker afterits coupling with the shuttle, these mechanisms consistin of a picker stick hingedly connected with the poker, means for slowly pulling back the picker; consisting of a spring, a crank hingedly connected with said picker, and means for rapidly throwing the picker forward, a locking mechanism executing an oscillating movement corresponding. to half a rotation of said crank, means for locking said crank after passing through the dead point position, and means for releasing the looking to efl'ect the throwing of the shuttle.

7. In a loom. of the fly motion type as claimed in claim 1, the combination of mechanisms for the pulling back of the picker after its coupling with the shuttle, these mechanisms consistin of a picker stick hingedly connected w1th the poker, means for slowly pulling beck the picker and means for rapidly throwing the picker forward, these means consisting of a sgstem of levers connected with an arm of t e picker stick and two lifting devices of which the one controls the throwing motion and the other the l:eturn motion of the arm of the picker stic 8. In a loom of the fly motion type as claimed in claim 1, means of ad'ustable l len 11 for hingedly connecting sai picker wit said picker stick.

Signed at Leipzig this 13th day of Novem bel 1923. I

FRIEDRICH EiLHAYJER. 

